A339944 - cp's OEIS frontend

A339944 Let N(p,i) denote the result of applying "nextprime" i times to p; a(n) = smallest prime p such that N(p,4) - p = 2*n, or -1 if no such prime exists.

n	a(n)
1	-1
2	-1
3	-1
4	-1
5	3
6	5
7	17
8	13
9	19
10	47
11	79
12	73
13	113
14	109
15	193
16	317
17	313
18	521
19	503
20	523
21	887
22	1499
23	1231
24	1319
25	1373
26	1321
27	1307
28	3947
29	2473
30	2143
31	2477
32	7369
33	5573
34	5939
35	9967
36	16111
37	18587
38	20773
39	18593
40	31883
41	17209
42	19597
43	24251
44	19609
45	25471
46	31397
47	44389
48	18803
49	38459
50	38461
51	66191
52	69557
53	103183

[-1, -1, -1, -1, 3, 5, 17, 13, 19, 47, 79, 73, 113, 109, 193, 317, 313, 521, 503, 523, 887, 1499, 1231, 1319, 1373, 1321, 1307, 3947, 2473, 2143, 2477, 7369, 5573, 5939, 9967, 16111, 18587, 20773, 18593, 31883, 17209, 19597, 24251, 19609, 25471, 31397, 44389, 18803, 38459, 38461, 66191, 69557, 103183]

cp's OEIS Frontend

A339944 Let N(p,i) denote the result of applying "nextprime" i times to p; a(n) = smallest prime p such that N(p,4) - p = 2*n, or -1 if no such prime exists.

Table of values

List of values